数字农科院2.0

Long-term fertilization-induced increases in glomalin-related soil protein depend on the phosphorus input and aggregate stability across climatic zones

文献类型： 外文期刊

作者： Yang, H.; Li, G.; Wu, D.; Xiao, Q.; Li, X.; Huang, Y.; Meersmans, J.; Colinet, G.; Xu, M.; Zhang, W

关键词： Long-term fertilization; Heterogeneity; Glomalin-related soil protein; Arbuscular mycorrhizal fungi; Cropping systems

期刊名称： SOIL & TILLAGE RESEARCH

ISSN： 0167-1987

年卷期： 2025 年

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Arbuscular mycorrhizal fungi (AMF)-derived glomalin-related soil protein (GRSP) contributes to soil carbon sequestration and structural stability. However, how fertilization-induced changes in GRSP differ across climatic zones and management practices remains poorly understood. Here, we investigated the effects of climate, soil properties, and AMF on total GRSP (T-GRSP) based on 14 long-term managed fields (no fertilization, CK; chemical fertilization, CF; organic fertilization, OF) across eastern China, spanning the mid-temperate, warm- temperate zones, and subtropics. Results showed that T-GRSP ranged from 1.0 to 5.1 mg g 1 , with a nonlinear latitudinal pattern (mid-temperate zone > subtropics > warm-temperate zone). T-GRSP were significantly 46 % higher under OF compared to CK, whereas CF had no significant effect in temperate zones. Fertilization-induced increases in T-GRSP (ΔGRSP) declined from subtropics (CF: +35.1 %; OF: +80.4 %) to warm-temperate (CF: +13.5 %; OF: +66.6 %) to mid-temperate (OF: +26.7 %), indicating greater effects in warmer and wetter zones. Mixed-effects models revealed zone-specific drivers of ΔGRSP: P input (> 200 kg P 1 2 O 5 ha ) dominated in mid- temperate zone, AMF biomass in warm-temperate zone, and aggregate stability in subtropics. These differences reflect climatic modulation of nutrient availability and soil structural constraints. Overall, GRSP responses to fertilization are jointly shaped by climate, nutrients, soil structure. Region-specific management strategies are recommended: enhancing aggregate stability in subtropical soils, and optimizing P input and organic amend ments in colder zones. These findings offer valuable guidance for context-specific soil management in agricul tural systems.

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